Yu. F. Filipov

Anisotropic disk dielectric resonator with conducting end faces

Electrodynamic analysis of a disk dielectric resonator with finite-conductivity end faces that is excited at the whispering-gallery mode is carried out. The inverse problem of determining the components of the permittivity tensor of the anisotropic uniaxial crystal, loss tangent of the dielectric material, and surface resistance of the conductor is formulated and solved. The frequency spectra and energy characteristics of a Teflon disk resonator with copper-covered end faces are studied in the 8-mm wave range.

Q Factor of a Millimeter-Wave Sapphire Disk Resonator with Conductive End Plates

AbstractThe quality factor of a sapphire disk resonator with conductive end plates is studied theoreticallyand experimentally. The feasibity of measuring the sheet resistance of copper, titanium, and

Microwave properties of HTS films: measurements in the millimeter wave range

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Whispering gallery modes in a hemispherical isotropic dielectric resonator with a perfectly conducting planar surface

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Anisotropic Spherical Cavity Resonator I. Azimuthally Homogeneous Oscillations

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Electromagnetic waves and oscillations in the layered semiconductor-dielectric-semiconductor structure

high-temperature superconductor films in the 8-mm range is shown.

Spectrum of dielectric spherical resonator forced by azimuthally periodical electrical current

New results of theoretical and experimental investigations of non-uniform dielectric resonators with the higher order azimuthal waves (whispering gallery modes) have been presented. Their application for study of various materials (dielectric, high-Tc superconductor) and for generation obtaining of millimeter wave oscillations has been considered.

Distribution of an Electromagnetic Field of Eigen Oscillations in A Radially Two-Layered Resonator

A theoretical and experimental justification of an approach proposed and developed by us for surface impedance standard measurements of HTS films is presented. An analysis of the electromagnetic properties of quasi-optical dielectric resonators with conducting endplates, which provides a theoretical background for studies of HTS films in the millimeter wave range, is performed. With this technique, the highest-quality modes, namely whispering gallery modes, are excited in a dielectric cylindrical disc sandwiched between HTS films. Considerable enhancement of the sensitivity of surface resistance measurements in the millimeter wave range is demonstrated, which is important for the fundamental investigation of superconductor physics. It is also shown that the measured frequency shift in the resonator with the HTS endplates as a function of the temperature reveals a possibility for accurate evaluation of the field penetration depth in HTS films.